Oh dear there is a lot of confusion on this thread...
An Ameraucana is a true, pure breed, accepted by the APA. Laying blue eggs is only one requirement of their breed standard.
An Easter Egger is a multigenerational Ameraucana crossbreed.
You can tell the difference easily when they are young. True Ameraucanas will always be sold prefixed with a color; e.g. a "Wheaten" Ameraucana or a "Blue" Ameraucana. Easter Eggers will often be mislabeled as simply "Americaunas." True Ameraucanas will be pricey, chicks alone often upwards of $20. Both Ameraucanas and Easter Eggers are known to have a pea comb, slate legs, a beard and ear muffs, and lay blue eggs; however, all Ameraucanas are required to have these traits, whereas about 20% of Easter Eggers will lack one or more of them.
Whoever told you that has no clue what they are talking about. Ameraucanas were included in the original crosses to make Easter Eggers, not the other way around.
They are Easter Eggers. Keep an eye on those two in the front... both have strong indicators of being cockerels. Pattern and combs are very suspicious.
This is almost correct. However, Ameraucanas can't be "any" color. They must be a specific color from parents of the same color. An Ameraucana who lacks a variety is an Easter Egger through and through.
No breed with a beard and muff will magically lose them as adults. If they have a beard as juveniles, they will have had it as chicks, and will continue to have it as adults.
Did not imply they magically lose them...When they are growing in their big bird feathers the muffs and beards can be missing till all the feathers grow in.